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(No Model.) 3 SheetsSheet 1 T. C. DEXTER. PAPER REGISTERING MECHANISM. 7

No. 590,476. Patented Sept. 2 1,189?

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3 Sheets-Sheet 2.

(No Model.)

T. G. DEXTER. PAPER REGISTERING MECHANISM.

No. 590,476. Patented Sept. 21,1897.

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(NO Model.) 3 SheetsSheet 3.

v T.G.DEXTER. PAPER REGISTERING MECHANISM.

No. 590,476. Patented Sept. 21,1897.

INVEHTO R WITNESSES fly fw ATTORNEY m: mums Firms :0. mtauna, wumnm'cu,n c,

UNITED STATES PATENT OFFICE.

TALBOT C. DEXTER, OF PEARL RIVER, NEW YORK, ASSIGNOR TO THE DEXTERFOLDER COMPANY, OF NEW YORK, N. Y.

PAPER-REGISTERING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 590,476, datedSeptember 21, 1897.

Application filed September 2,1896. Serial No. 604,625. (No modeh) Toall whmit it Duty concern:

Be it known that I, TALBOT O. DEXTER, of Pearl River,- in the county ofRockland, in the State of New York, have invented new and usefulImprovements in Paper-Registerin g Mecl1anisms,of which thefollowing,taken in connection with the accompanying drawings, is a full,clear, and exact description.

This invention is designed for use on paperfolding machines or othermachines receiving paper provided with slits for the purpose ofregistering the paper by means of attenuated instruments on saidmachines entering the slits.

The object of the invention is to provide simple and efficient means forutilizing the slitted portions of the paper for arresting the movementof the paper carried into the machine and at the same time registeringor alining the same; and to that end the invention consists principallyin the combination, with the sheet-conveying tapes, of a combined sheetstopping and registering gage moving vertically to and from the passageof the sheet to bear on the sheet while moving under the influence ofthe tapes and arresting the motion of said sheet by the abutment of saidgage against the edge of the slit made in the sheet for that purpose.

The invention also consists in the combination,with said combined sheetstopping and registering gages, of longitudinal paper-supporting barsdirectly under said gages and provided with longitudinal grooves intheir top surfaces, which grooves allow the gages to depress the papertherein and thereby facilitate the abutment of said gages against theedges of the slits made in the sheet for that purpose.

The invention also consists in the combination, with the aforesaidcombined sheet stopping and registering devices, of slow-downmechanismchecking the longitudinal movement of the sheet at a proper time toguard against the tearing of the sheet by violent contact of the slittedportions of the paper with said stopping devices; and the inventionfurthermore consists in certain novel features of the details of themachine, as hereinafter described.

In the accompanying drawings, Figure 1 is a plan view of a paper-foldingmachine equipped with my invention. Fig. 2 is a side elevation of thesame. 3 is a longitudinal section on line X X in Fig. 1. Fig. 4: is anenlarged vertical transverse section on line Y Y in Fig. 1. Fig. 5 is anenlarged sideview of the combined sheet stopping and registeringinstrument, and Fig. 6 is a transverse section of a modification of thepapersupporting bars employed under the gages.

Similar letters of reference'indicate corresponding parts.

A represents the main frame of a paperfolding machine; B B, the paperfolding rollers. C denotes the blade which tucks the paper into the biteof said rollers.

a a are the usual tapes which convey the paper to its position for beingfolded, and a a are the usual bars which support the portion of thepaper which lies beyond the folding-rollers.

Preparatory to introducing the paper between the folding-rollers it isnecessary to arrest the movement of the paper conveyed on the machine bythe aforesaid tapes to a and to register or properly arrange the paperin its position in relation to the bite of the folding-rollers. Mypresent invention accomplishes both of said requirements by the sameinstrument.

In lieu of the usual end gage, which consists this present case use twosheet-arresting instruments disposed at opposite sides of thelongitudinal central line of the passage of the paper and movablevertically to and from said passage to intercept the sheet by engagingthe slitted portions thereof and simultaneously squaring or registeringsaid sheet in its position. Said instruments I prefer to construct asfollows: Upon opposite sides of the main frame A, I firmly support theends of two cross-bars b b, to each of which I attach suitable bracketsb 12, disposed at opposite sides of thelongitudinal central line of thepassage of the paper. The brackets of the two cross-bars are in pairsarranged in lines parallel with said passage, and to each of said pairsI attach the ends of one of the longitudinal bars 0 c. On each of thelatter bars is mounted a sleeve (Z, which is adjustable longitudinallyon the bar to accommodate the combined gage and registering instrumentto the location of the slits in the paper to be registered. Said sleeveis provided with a set-screw (Z for retaining the sleeve in its adjustedposition.

The combined sheet stopping and registering instrument proper consistsof a rock-arm e, pivoted to the sleeve (Z, so as to allow said arm toswing in a vertical plane. To the free end of this rock-arm is attacheda tongue 6 of suitable shape and dimensions to allow it to enter intothe slit of the paper without tearing the paper, said tongue pointingtoward the paper-receiving end of the machine, as shown in Figs. 2 and 3of the drawings. The arm 6 receives intermittent rocking motion from apitman f, connected at one end to said arm and having its opposite endbifurcated and straddling a shaft g, which extends across the machineand is journaled in suitable hearings on the sides of the main frame A.Said shaft receives rotary motion by means of suit-able mechanismactuated by the driving-gears of the folding-machine. To said shaft arefastened two cams g, and to the bifurcated ends of the two pitmen f arepivoted rollers f, by which the pitmen bear on the cams. Said rollersare maintained in contact with the cams by means of suitable springs,which may consist of spiral springs 71, surrounding rods h, which areattached to the free end portions of the rockarms e and slide in eyesformed in bars f extending from the sleeves. Said springs are interposedbetween the under sides of the said bars and collars f on the rods h andeX- ert downward pressure on the arms 6 and end pressures on the pitmenf toward the cams g.

Under each of the aforesaid rock-arms e is located a longitudinal bar D,supported on cross-bars D D, secured to the sides of the frame A. Thetop of each of said longitudinal bars is provided with a longitudinalgroove t, as more clearly shown in Fig. at of the drawings. The tops ofthe bars D are even with the tops of the paper-supporting bars a, andthus the paper conveyed by the tapes a a slides upon the bars D.

The movements of the cams g are so timed as to cause them to lift thearms e e while the advance portion of the paper passes under said armsand then depress said arms in time to cause the tongues e to bear on thepaper sufficiently to press the paper into thegrooves i of the bars Dand thereby strain the paper sufficiently to open the slits therein, andin the further advancing of the paper the tongues c e are caused toenter said slits and finally arrest the movement of the paper by theedges of the slitted portions thereof coming in contact with the arms 6e. In case the paper happens to be out of line, so as to cause one ofthe slits thereof to come'in contact with its arresting-arm 6 before theother slit arrives at the same position in relation to itsarresting-arm, then the portion of the paper containing the latter slitis caused to continue its forward movement by the force of thepaper-conveying tapes until both slitted portions are in contact withthe two arrestingarms 6 e, and when this is effected the paper isproperly alined or registered. Then the cams g g by means of the pitmenff lift the two arms 6 e to relieve the paper from the pressure of thetongues e, and by that time the folding-blade O tucks the paper into thebite of the folding-rollers B B, which draw the paper down between themand thereby fold it. The pressure of the tongues 6 upon the paper duringthe forward movement thereof tends to retard said movement and therebyguard to some degree against the tearing of the paper by the engagementof said tongues with the slitted portions of the paper. The movement ofthe folding-blade O is so timed as to come in contact with the paper andprevent its being moved by the tapes while the arms e e are being liftedto release the paper.

In order to allow the described registering mechanisms to be adjustedfor operating on sheets of different widths, I mount the brack? ets b I)adj ustably in a lateral direction on the cross-bars Z) l) in anysuitable and readilysuggested manner, which may'eonsist in providin gthe cross-bars b b with prolonged 1011- gitudinal slots j for thereception of the attaching-boltsj. The cams g g are also adjustablyconnected to the shaft g to conform to the aforesaid adj nstment of thebars a c. To allow the bars D D to be adjusted correspondingly, thecross-bars D D are provided with prolonged slots Z Z, extendinglengthwise thereof and receiving through them the attaching-boltsZ Z.

The pitmen f are made extensible to conform to the adjustment of thesleeves d d on the longitudinal bars 0 e. For this purpose each of saidpitmen may be composed of two end sections having their adjacent endsembraced by a sleeve m and adj ustably clamped therein by set-screws mm. I do not Wish to be limited to the specific construction of the barD, formed with the groove 2', inasmuch as two bars placed parallel sideby side with a space 11 of the width of the groove 2' between them, asshown in Fig. 6 of the drawings, will in many instances serve the samepurpose. This latter construction allows the space 1" to be adjusted inwidth.

To more effectually guard against tearing and buckling of the paper byexcessive force. of contact of the slitted portions of the paper withthe paper-arresting arms or gages e e, I employ sheet-retardingmechanisms brought momentarily into action immediately before theaforesaid contact. mechanism is represented of the form of rollers R R,mounted on a transverse shaft 01., which receives rotary motion by meansof suitable gears-such as shown, for instance, at 1 2 3 4 in Figs. 1 and2 of the drawings which gears cause the rollers to revolve in the- Thisretarding same direction as the tape-roller T, but at a greatly-reducedspeed. Over each of the said retarding-rollers is a drop-roller R,mounted on a transverse shaft, which is supported on the ends of arms 00, extending from a rockshaft 0, actuated by a lever 0 attached to theend of said shaft and oscillated by a ro tary cam 0 This cam is soshaped or timed as to cause the drop-rollers R to drop onto thesheet-retarding rollers R R just before the slitted portions of thepaper reach the gages e e, and thereby nearly stop the paper in itsprogress, and then immediately lift said rollers to release the paper toallow it to gently proceed to the gages, where the tongues e 6 enterinto the slits and cause the advance edges thereof to come in contactwith the arms 6 e, which completely stop the motion of the paper, ashereinbefore described.

YVhat I claim as my invention is 1. In combination with thesheet-conveying tapes, longitudinal sheet-supportin g bars provided withlongitudinal grooves in their tops, combined sheet stopping andregistering gages over said bars and moving vertically to and from thegrooves thereof to depress the sheet therein and arrest the movement ofthe sheet by contact of said gages With the edges of the slits made inthe sheet for that purpose.

2. In combination with the sheet-conveying tapes, sheet-supporting barsprovided with grooves in their tops, combined sheet stopping andregistering gages over said bars and moving vertically to and from thesame, and tongues on said gages depressing the sheet in the grooves ofsaid bars and thereby entering slits made in the sheet for that purposeand causing the motion of the sheet to be arrested by contact of theedges of the slits with the said gages, as set forth.

3. In combination with the sheet-conveyin g tapes, sheet-supporting barsprovided with grooves in their tops, oscillatory arms moving in verticalplanes to and from said bars and by depressing into the grooves thereofthe sheet in transit opening the slits made in the paper for thatpurpose and by contact with the edges of the slit arresting the motionof the sheet, as set forth.

4. In combination with the sheet-conveying tapes, sheet-supporting barsprovided with grooves in their tops, oscillatory arms pivoted to swingin vertical planes to and from said bars, tongues on said armsdepressing the sheet into the grooves of the aforesaid bars and enteringinto the slits made in the sheet for that purpose, said tongues openingthe slits and guiding the rear edges of the slits to contact with thearms and thereby arresting the motion of the sheet and registering thesame.

5. In combination with the sheet-conveying tapes, sheet-supporting barsprovided with longitudinal grooves in their tops, bars disposed parallelov'er said supporting-bars,arms supported longitudinally adjustable onsaid upper bars to operate on sheets of different lengths, said armsmoving to and from the grooves of the sheet-supporting bars and bycontact with the edges of the slits in the sheet arresting the movementof said sheet, as set forth.

6. In combination with the sheet-conveying tapes, sheet-supporting barsdisposed laterally adjustable at opposite sides of the longitudinalcentral line of the paper-passage and provided with longitudinal groovesin their tops, stationary parallel bars extending horizontally acrossthe machine, longitudinal bars secured at their ends laterallyadjustable on the aforesaid cross-bars, sleeves moun'tedlongitudinallyadjustable on said longitudinal bars, arms pivoted to'said sleeves toswing to and from the grooves of the aforesaid sheetsupporting bars, andreciprocating pitmen actuating said arms and adjustable in their lengthsto conform to the adjustment of the aforesaid sleeves, as set forth.

In testimony whereof I have hereunto signed my name this 23d day ofJuly, 1896.

TALBOT O. DEXTER. [L. s.] Witnesses:

E. P. SToUeHToN, V. E. MARsH.

